Half to william m



(ModeL) 4 SheetsSheet 1.

G. A. MUEGGE.

SEWING MACHINE.

No. 332,207. Patented Dec. 8, 1885.

INVENTOR Km J ATTORNEYS (ModeL) 4 Sheets-Sheet Z.

0. A. MUEGGE.

SEWING MACHINE.

No. 332,207. Patented Dec. 8, 1885 t i .7! z Z Z WITNESSES INVENTOR 1 g z (QM MK I BY /fi %4 M W #4 I W ATTORNEYS (Model. 4 Sheets-Sheet .3. G. AMUEGGE.

SEWING MACHINE. No. 332,207. Patented Dec. 8, 1885.

WITNESSES I INVENTOR X %4 /Z/ x i2 51 film/K \/Z% ATTORNEY3.

UNITED STATES PATENT CARL A. MUEGGE, OF NEIV BRUNSWICK, NEW JERSEY, ASSIGNOR OF ONE- HALF TO WILLIAM M. HOUSE, OF NEW YORK, N. Y.

SEWING-MACHINE.

SPECIFICATION forming part'of Letters Patent No. 332,207, dated December 8, 1885.

(ModoL) T0 aZZ whom it may concern.-

Be it known that I, CARL A. MUEGGE, of New Brunswick, in the county of Middlesex and State of New Jersey, have invented certain new and useful Improvements in Sewing- Machines, of which the following is a specification.

\ This invention relates to that class of lockstitch sewing-machines in which the lower thread is supplied from a bobbin placed within a horizontally-rotating cup-shaped bobbincarrier having a hook for carrying the loops of needle-thread around the bobbin and its thread.

In the accompanying drawings, Figure 1 represents a side elevation of my improved sewing-machine; Fig. 1, a detail plan of the take-up. Fig. 2 is a bottom View of the machine; Fig. 3, an end elevation of the same. Figs. 4, 5, and 6 are respectively a vertical central section on line :20 :r, Fig. 2, a top view, and a side View of the horizontally-rotating bobbin-carrier and hook, drawn on a larger scale. Figs. 7 and 8 are a vertical central section and a side view of the bobbin-case,and Fig. 9 is a detail side view of the needle-guard of the throat-plate. Fig. 10 is a side elevation, partly in section; and Fig. 11 is a section on the line 11 11 of Fig. 10, looking toward the fly-wheel.

Similar letters of reference indicate corresponding parts.

Referring to the drawings, A represents the vertically-reciprocating needle-bar, which is operated, in the usual manner, by the main driving-shaft, supported in the hollow main arm 0 of the sewing-machine. On the main arm 0 are arranged the usual tension devices for the needle-thread and an oscillating takeup, D, which, instead of having one eye, is provided with three or more eyes, which work in connection with a fixed thread-guide, D, having one more eye than the movable takeup, as shown in Figs. 1, 1, and 3. The oscillating take-up D and thread-guide D supply readily the required length of thread necessary for the proper working of the machine. The lower thread is supplied from a bobbin, F, which is placed bodily into a cup-shaped carrier, E, that is applied to the enlarged head or disk E of a vertical shaft, E. This shaft turns in bearings E, Fig. 4, below the table of the machine, and receives rotary motion from afulcrumed connecting-rod, E, and suitable transmitting-gearing, a n,from the driving-shaft in the main arm 0. The vertical shaft E has a crank, e, at its lower end,which is connected by a pivot-link, c, to one end of the connecting-rod E*, while the opposite end of the same is connected to a crank, e", at the lower end of a vertical shaft, 6 that receives rotary motion by the usual bevelgear transmission from the driving-shaft in the main arm of the machine. The fulcrum e" of the connecting-rod E is located on a horizontal lever, 0 pivoted on a fixed vertical rod, 6, as shown in Figs. 1 and 2. The bevel-gear n on the main shaft has double the number of teeth of the bevel-gear n on the vertical shaft 6 and the carrier E is thus caused to rotate twice while the needle makes one up-and-down stroke. The object of this double rotation of the rotary hook or bobbin-carrier is to enable the latter to loop the needle-thread quickly around the bobbin-thread, and still leave sufficient time before the needle again descends to enable the take-up to tighten and complete the stitch.

In place of imparting a continuous rotary motion to the bobbin-carrier a rotary reciprocating motion may be given to the same, by which the stitch is formed in the same manner, provided the hook is oscillated twice for each up-and-down stroke of the needle. cup-shaped carrier E is secured by fasteningscrews f to a segmental cheek, f, at one side of the disk-shaped head E, so that a nearly ring-shaped space, f, is formed between the carrier E and the head E, said check being situated in a horizontal plane low enough to give sufficient play to the carrier to turn hori zontally around the needle without interfering with the up-and-down motion of the same. The carrier E is provided at one side with a curved recess, f and with a llO1lZOl'1l72tlly-pI'O- jecting book, 9, that begins at the inwardlypointed portion f" of the recess f The curved recess f 3 extends downwardly below the top of the disk-shaped head E, in which the bobbin-case rests, (see Fig. 6,) so that as the carrier rotates the loop of needle-thread caught by the hook 9 willbe forced around under the bobbin-case resting in said head or disk. The hook g has an abutment, g, at some distance from the tapering end of the hook, back of The I IOC W, as shown in Figs. 10 and 11.

7 shown clearly in Fig. 5. The needle passes are so arranged that they do not interfere with through the hole of the throat-plate F, and

is guided along a downwardly-extending needle-guard, F of semicircular cross-section, which has a notch, h, at one side of its lower end, as shown in Fig. 9. The notch h of the needle-guard F serves for the purpose of retaining the needle-thread while the loop is formed by the horizontally-rotating hook g. The bobbin thread is supplied either directly from a wooden or other bobbin, or it may be placed in a metallic bobbin-case, G. (Shown in Figs. 7 and 8.) This is made of cylindrical shape, somewhat larger than the bobbin, and provided with one or more tension-holes for the bobbin thread, and with two exterior heels, z t", of which the heel t at the middle part of the case rests against the needle-guard F and retains the bobbin-case in position, thereby preventing it from turning on its axis in the carrier E,while the heel 1; at the lower part of the case takes up and holds the needle-thread for the formation of the loop by the hook g. The heels it" also prevent the bobbin-case from turning on its axis on the carrier E, as above described. I prefer to use a metallic bobbin-case, G, whenever a very accurate tension is desired to be imparted to the lower thread, while for ordinary sewing the wooden bobbin without the bobbin-case will be sufficient. In using the bobbin without the case a certain degree of tension is imparted to the bobbin-thread, as the unwinding of the same takes place in opposite direction to that of the horizontally-rotating carrier, the bobbin being so placed within the carrier that as the thread unwinds from it while being taken up it will turn in a direction the reverse of that of the rotating carrier.

The'feed-plate H rests upon the carrier H, which is supported upon afork-shaped oscillating lever, H, the front end of whichis drawn in a downward direction by a spiral spring, Z, guided along fixed pins Z, and cushioned by interposed spiral springs Z as shown clearly in Fig. 3. The oscillating feed-lever H is fulcrumed at its middle portion to a centrallypivoted cross-piece, Z and acted upon at its opposite end by a verticallyreciprocating extension-rod Z,operated,in the usual manner, by an eccentric, m, on the main driving-shaft, and by a laterally-oscillating crank, Z that engages a transverse hole in the pin Z which oscillates in a horizontal longitudinal recess of the lever H as shown in Figs. 2, 10, and 11, and is operated by an arm, 1, which is actuated by the cam mon the main driving-shaft. The cams m and m are separated by the disk The piece Z has its pivot in the block p, which is vertically adjusted through its frame 10, to which it is pivoted by means of the screw 19 An upand-down motion and a laterally-oscillating motion are thereby imparted to the feed by the usual well-known means, whereby a regular forward feed is imparted to the fabric.

'-Thc feed-plateand its actuating mechanism the bobbin-carrier and its actuating mechanism.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. The combination of a vertically-recipro eating needle, a throat-plate having a downwardly-extending needle-guard, a horizontally-rotating bobbin-carrier having a loopforming hook, a bobbin-case having heels or projections adapted to engage said needleguard, and means for imparting rotary motion to the carrier. substantially'as set forth.

2. The combination of a vertically reciprocating needle, a throat-plate having a downwardly-extending needle-guard, a cylindrical bobbin-carrier having a curved recess and an exterior loop-forming hook,and means whereby the bobbin-carrier is rotated twice for each up-and-down stroke of the needle, substantially as specified.

3. The combination of a horizontally-rotating bobbin-carrier provided with a. curved downwardly-extending recess, as f extending below the top of the head or disk of the carrier, and an exterior horizontal hook, a vertical shaft having a disk-shaped head connected to said carrier, and mechanism for imparting rotary motion to said shaft, substantially as set forth. r

4.. The combination of a vertically-reciprocating needle, a throat-plate having a semicircular needle-guard notched at the lower end, a bobbin-carrier having a curved recess and an exterior hook, a vertical shaft having a disk-shaped head connected to the bobbincarrier, and means whereby rotary motion is imparted to the carrier-shaft, substantially as described. I

5. The combination of a vertically-reciprocating needle, athroat-platehavingadownwardly-extending needle-guard, a horizontally-rotating bobbin-carrier having a curved recess and an exterior horizontal hook, at vertiis. imparted to the carrier-shaft, substantially as set forth.

In testimony that I claim the foregoing as my invention I have signed my name in pres, ence of two subscribing witnesses.

Witnesses: CARL A. M'UEGGE.

PAUL GOEPEL, SIDNEY MANN. 

